New Delhi, The price of petrol cut by Rs 1 a litre and diesel by Rs 2 per litre, the fourth reduction in rates since July. Now, the petrol will cost Rs 60.09 a litre in Delhi from midnight as compared to Rs 61.09 a litre currently. The price of diesel will cost Rs 50.27 per litre as against Rs 52.27. "The current level of international product prices of petrol and diesel and rupee-dollar exchange rate warrant a decrease in selling price of petrol and diesel, the impact of which is being passed on to the consumers with this price revision," IOC said.